Release 4.0.0 (#113)

* Prepare 4.0

* Update CHANGELOG.md

* cs

* Update CHANGELOG.md

* Update README.md

Author: Nyholm

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## v4.0.0
+
+- Added support for PHPUnit 8.0
+- Dropped support for PHPUnit 7.x
+- Dropped support for PHP 7.1
+- Made classes and methods final
+- Added more type hints. 
+
 ## v3.1.0
 
 - Added support for `yaml` file extension. 

README.md

@@ -343,6 +343,7 @@ container:
 
 | Version | Released     | PHPUnit    | Status     |
 |---------|--------------|------------|------------|
-| 3.x     | Mar 5, 2018  | 7.x        | Latest     |
+| 4.x     | Mar 28, 2019 | 8.x        | Latest     |
+| 3.x     | Mar 5, 2018  | 7.x        | Bugfixes   |
 | 2.x     | May 9, 2017  | 6.x        | Bugfixes   |
 | 1.x     | Jul 4, 2016  | 4.x and 5x | EOL        |